Door lock



FIG. 1 is a perspective view of a door lock showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines environment is for illustrative purpose only and formsno part the claimed design.

CLAIM I claim, the ornamental design for a door lock, as shown anddescribed.